<?php

/**
 * This is the model class for table "category".
 *
 * The followings are the available columns in table 'category':
 * @property integer $id
 * @property string $name_vi
 * @property string $name_en
 * @property integer $type
 * @property integer $parent_id
 */
class Category extends CActiveRecord {

    /**
     * Returns the static model of the specified AR class.
     * @param string $className active record class name.
     * @return Category the static model class
     */
    public static function model($className = __CLASS__) {
        return parent::model($className);
    }

    /**
     * @return string the associated database table name
     */
    public function tableName() {
        return 'category';
    }

    public $hasParent = false;

    /**
     * @return array validation rules for model attributes.
     */
    public function rules() {
        // NOTE: you should only define rules for those attributes that
        // will receive user inputs.
        return array(
            array('parent_id', 'numerical', 'integerOnly' => true),
            array('hasParent', 'boolean'),
            array('name_vi, name_en', 'length', 'max' => 255),
            // The following rule is used by search().
            // Please remove those attributes that should not be searched.
            array('id, name_vi, name_en, parent_id', 'safe', 'on' => 'search'),
        );
    }

    /**
     * @return array relational rules.
     */
    public function relations() {
        // NOTE: you may need to adjust the relation name and the related
        // class name for the relations automatically generated below.
        return array(
            'parent' => array(self::BELONGS_TO, 'Category', 'parent_id'),
            'childs' => array(self::HAS_MANY, 'Category', 'parent_id')
        );
    }

    /**
     * @return array customized attribute labels (name=>label)
     */
    public function attributeLabels() {
        return array(
            'id' => Yii::t('category', 'Id'),
            'parent_id' => 'Parent',
            'name_vi' => Yii::t('category', 'Name Vietnamese'),
            'name_en' => Yii::t('category', 'Name English'),
        );
    }

    /**
     * Retrieves a list of models based on the current search/filter conditions.
     * @return CActiveDataProvider the data provider that can return the models based on the search/filter conditions.
     */
    public function search() {
        // Warning: Please modify the following code to remove attributes that
        // should not be searched.

        $criteria = new CDbCriteria;
        $criteria->compare('id', $this->id);
        return new CActiveDataProvider($this, array(
            'criteria' => $criteria,
            'pagination' => array('pageSize' => Constant::PAGE_SIZE,),
        ));
    }

    /**
     * Get all category with has parent or not
     */
    public function getAllCategories($hasParent = FALSE) {

        $criteria = new CDbCriteria;
        if ($hasParent) {
            $criteria->addCondition('parent_id is not null');
        }
        $categories = Category::model()->findAll($criteria);
        return $categories;
    }

    /**
     * get name of category by id
     */
    public function getCategoryNameById($id) {
        $name = null;
        if ($id != null) {
            $category = category::model()->findByPk($id);
            if ($category != null) {
                $name = $category->name_en;
            }
        }
        return $name;
    }

}